. >> reporter: the white house said after the newtown shooting that president obama supports a ban on assault weapons proposed by california democratic senator dianne feinstein. getting it through congress quickly is highly unlikely, but the mere mention of a ban is enough to send sales soaring and, it's not just guns. brownells said it recently sold more than three and a half years worth of ar-15 magazines in three days. even before newtown, sales of guns and ammunition this year were surging. fbi background checks of potential gun buyers were up 31% in november 2012 over 2011. in a report issued prior to newtown, the market research firm ida's world that tracks the gun industry, found gun enthesists are working themselves into a frenzy over what another four years under the obama administration may hold for gun laws. chuck is an instructor at nova firearms in falls church, virginia, where they nearly sold out of ar-15's and high capacity magazines after newtown. >> so ironically this shooting is inspiring more people to buy this gun, the ar-15 and the high round magazines? >> if i c